chemical formula element definition
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Chemical formula A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.tructural formula for butane. This is not a chemical formula. Examples of chemical formulas for butane are the empirical formula C 2 H 5, the molecular formula C 4 H 10 and the condensed (or semi-structural) formula CH 3 CH 2 CH 2 CH 3.
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CONTENTS An element is a substance composed of identical atoms. This definition was one of the cornerstones of John Dalton's atomic theory, but it too was made obsolete by the discovery of isotopes.Atoms of the same element have different numbers of neutrons in their nuclei.n other words, all atoms of an element have the same atomic number. This modern definition resolves some sticky situations encountered with older definitions: The definition above doesn't make element and mixture mutually exclusive classifications of matter.
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Symbol (chemistry) In chemistry, a symbol is a code for a chemical element. It is usually derived from the name of the element, often in Latin. This is an example of an atomic symbol. The text boxes explain where the numbers are derived from.
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Definition of Element Definition of Element. 1) A substance that cannot be decomposed into simpler substances by chemical means. 2) One of the 116 presently known substances that cannot be decomposed by chemical reaction into a simpler substance. Elements comprise all matter at and above the atomic level.
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- 1 Chemical formulas are used to describe the types of atoms and their numbers in an element or compound. 2  The atoms of each element are represented by one or two different letters.  When more than one atom of a specific element is found in a molecule, a subscript is used to indicate this in the chemical formula.
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Chemical formula A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs. chemical formula is not a chemical name, and it contains no words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula.
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molecular formula A chemical formula that shows the number and kinds of atoms in a molecule. molecular formula. A chemical formula that shows the total number and kinds of atoms in a molecule, but not their structural arrangement. For example, the molecular formula of aspirin is C9H8O4. Compare empirical formula, structural formula.
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Category:Chemical elements Wikimedia Commons has media related to Chemical elements. A chemical element is a substance that cannot be divided or changed into different substances by ordinary chemical methods. The smallest particle of such an element is an atom, which consists of electrons centered around a nucleus of protons and neutrons.
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What is an Element (in terms of Chemistry) ? An element is a chemical substance that cannot be broken-down into any simpler substances by chemical reactions. It consists of only one type of atom, though the atoms of an element may, or may not, join together to form molecules (that depends on the particular element and so the structure of its atoms).
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What is a Chemical Formula? - Definition, Types & Examples This information can be gathered from the chemical formula of the substance. A compound is a substance made up of a definite proportion of two or more elements. A chemical formula tells us the number of atoms of each element in a compound.It contains the symbols of the atoms of the elements present in the compound, as well as how many there are for each element in the form of subscripts.n a molecular formula, each element is written as their symbols in the periodic table, and the number of atoms for each element is shown by the subscript (small number to the lower right of the element).
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Chemical formula Chemical formula - Molecular formula. 1  Molecular formulas indicate the simple numbers of each type of atom in a molecule of a molecular substance. 2  A molecular formula shows the number of elements in a molecule, and determines whether it is a binary compound, ternary compound, quaternary compound or has even more elements.
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What is the scientific definition of an element? A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. 3 people found this useful.
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element Part of the Mathematics glossary: 1) In chemistry and physics, an element is a substance that cannot be broken down into simpler components by any non-nuclear chemical reaction. An element is uniquely determined by the number of protons in the nuclei of its atoms. The number of protons in the nucleus of the atom of an element is known as the atomic number of that element. The number of electrons in the atom of a specific element can vary.
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- We are looking at defining the terms chemical formula, chemical symbol, and chemical equation. A chemical symbol is really another name for an atomic symbol found on the periodic table. It is the one or two letter designation for each atom found on the periodic table. An example would be Na for sodium.
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Symbol (chemistry) A chemical symbol for an element is one or two letters. These are found on the periodic table of elements. The chemical symbol is an abbreviation of the chemical element name.… Example: O is the chemical symbol for Oxygen. K is the chemical symbol for Potassium. Pb is the symbol for lead. He is the symbol for helium.
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Formula A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. In empirical formulas, these proportions begin with a key element and then assign numbers of atoms of the other elements in the compound, as ratios to the key element.
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What Is a Chemical Formula? A chemical formula is an expression which states the number and type of atoms present in a molecule of a substance. The type of atom is given using element symbols. The number of atoms is indicated by a subscript following the element symbol. Chemical Formula Examples
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- molecular formula (plural molecular formulas or molecular formulae) (chemistry) A notation indicating the number of atoms of each element present in a compound. The molecular formula for ethane is C2H6, while the empirical formula is CH3.‎. Chinese: Cantonese: 分子式 (fan6 zi2 sik1) Mandarin: 分子式 (zh) (fēnzǐshì) Czech: sumární vzorec m, molekulární vzorec m.
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- O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+] Molecular Formula A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols and numbers.
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- Spatial Threshold (or threshold range) as different from the: (Outer) Range of a Good or Service: Goodall, p.391 (range); p.471 (threshold) p.116 (demand cone) 1.
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What is a Chemical Formula? - Definition, Types & Examples A compound is a substance made up of a definite proportion of two or more elements. A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound, as well as how many there are for each element in the form of subscripts.
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What Is a Chemical Formula? A chemical formula is an expression which states the number and type of atoms (given using element symbols) present in a molecule of a substance. A chemical formula is an expression which states the number and type of atoms (given using element symbols) present in a molecule of a substance.
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Chemical element A chemical element or element is a species of atoms having the same number of protons in their atomic nuclei (i.e. the same atomic number, Z). There are 118 elements that have been identified, of which the first 94 occur naturally on Earth with the remaining 24 being synthetic elements.
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Definition of Element An element is a substance consisting of atoms which all have the same number of protons - i.e. the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down using chemical methods. Elements can only be changed into other elements using nuclear methods. Although an element’s atoms must all have the same number of protons, they can have different numbers of neutrons and hence different masses.
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Chemical compound A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using the standard abbreviations for the chemical elements, and subscripts to indicate the number of atoms involved.
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Chemical Formula Chemical Formula. Chemical Formula-Written combination of element symbols that represents the atoms combined in a chemical compound. The Chemical Formula is an indication of the makeup of a compound in terms of the kinds of atoms and their relative numbers.aking error of capitalizing the second letter of an elements symbol can dramatically alter the meaning of a chemical formula. When we attempt to write a formula it is important to know whether the substance actually exists.